Solved–Assignment 6 –Solution

Description

• The attached file (attendance.txt) is a list of email addresses you collected for a conference your company hosted. Create a program that will parse each email address by its name and company.  (Note: email parser object below).   The company should be sorted in the first column and the person’s name associated with the company should be sorted in the second column; separated with tab character.  (first sort is by company; secondary sort is by firstname.lastname).

public class Email {

 

private String emailStr;

 

Email() {  }

 

Email(String str) {

emailStr = str;

}

 

public String parseEmailName() {

String name;

int pos = emailStr.indexOf(‘@’);

 

name = emailStr.substring(0,pos);

 

return name;

 

}

 

public String parseCompanyName() {

String company;

pos = emailStr.indexOf(‘@’);

dot = emailStr.lastIndexOf(‘.’);

 

company = emailStr.substring(pos+1, dot);

return company;

 

}

 

public String parseExtension() {

int ext;

int dot = emailStr.lastIndexOf(‘.’);

 

ext = emailStr.substring(dot+1,emailStr.length());

return ext;

}

 

}

 

 

Sample output is listed below:

 

amzn             bob.freed

amzn             caitlin.thomas

amzn             edward.flak

amzn             jill.bennet

amzn             mike.reade

fb                    chris.booker

fb                    fred.smith

fb                    jane.bland

fb                    megan.hill

goog              gary.teafer

goog              john.kohl

goog              larry.page

goog              phil.heal

goog              zara.war

msft               alan.gret

msft               darlene.neddle

msft               don.shaffer

msft               ken.smith

msft               sue.flemming

orcl                 heidi.opal

orcl                 john.voy

orcl                 larry.lee

orcl                 mark.lite

 

 

• Create a histogram on the number of attendees per company for the conference. (can be in same program as #1)

 

• Check if bill.gates attended the conference. Output that Bill Gates attended conference.  (can be in same program as #1)

 

 

 

 

 

 

 

 

• [Optional] Create an output text file for the output above so that it can be imported in Excel for further analysis. One method of code to write text to an output file:  (can be in same program as #1)

 

String text = “my text\r\n”;

BufferedWriter output = null;

try {

File file = new File(“example.txt”);

output = new BufferedWriter(new FileWriter(file));

output.write(text);

} catch ( IOException e ) {

e.printStackTrace();

} finally {

if ( output != null ) {

output.close();  // need to close file to write to a file

}

}